Machine for laying breast covers on heels



April 7', 1931. N. H. KNQWLTON MACHINEFOR LAYING BREAST COVERS ON HEELS Fild Dec. 4-, 1928 Patented Apr. 7, 1931 UNITED STATES NOR'WOOD H. KNOWIJTON, OF ROCKPORT,

MASSACHUSETTS, AsSieNon To UNITED SHOE MACHINERY CORPORATION, on PATER-SON, New JERSEY, A CoBPoRATioN or NEW JERSEY MACHINE FOR LAYING BREAST COVERS ON HEELS Application filed December 4, 1928. Serial No. 323,753.

This invention relates to machines for laying breast covers on heels, and has for an object the provision for this work of a machine which shall be extremely imple in structure and smooth in action and yet shall be more eflicient and'produce better results than any of themachines heretofore available for this operation. a

High heels for womens shoes are usually made of wood, the breast, sides and rear of such heels being covered with a thin layer of leather or other suitable material to give a finished appearance to the heel vand make it harmonizewith the rest of the shoe. The function of the machine illustrated herein is to lay and beat the covering material into intimate contact with the breast face of a breast'is covered with a flapspl'it from the t i heel, so that the cover shall be smooth and adhere firmly to the heel breast.

The present inventionprovides a machine which is useful in operating both upon heels of which the breast is covered with a separate piece of material and those of which the outer portion ofthe heel endof the shoe sole and remaining attached to the sole, the lastmentioned arrangement being the most common in the case of Louis heels.

Heel breast-covers are often .buEed prior 7 to the laying operation producing a delicate,

,velvetysurface, free from gloss, theperfection of whichis marred by the rotary metal tools generally employed in breast cover laying, such tools having a rubbing, ironing action which lays the nap on the buffed Surface and often produces spots having a more or less polished appearance upon said sur face. The rubbing actionof the rotary tool may also cause dragging or displacement of] the cover with resultant wrinkling, orpoor adhesion to the heel breast.

percussion type, in which thetool has a rapid reciprocating movement, are not adapted to and, furthermore, these machines create. a

' great deal of noise and vibration, with consequent unnecessary fatigue to the operator,

These drawbacks are overcome by the pres- On the other hand, the known beating machines of the ent invention, an important feature of which consists in a cover laying tool mounted upon a non-rotatable carrier, herein shown as a pin, which is movable in a closed path. The work engaging member, or tool, is preferably a sleeve which is freelyrotatable upon the pin. By employing a non-rotating tool carrier and making the tool freely rotatable of a roll of soft material, such as rubber, and invention 15 to be recognized 1n. sucha laying tool mounted for free rotary movement uponn a pin which is bodily movable :in a closed paith, whether thepin itself is rotatableor no In order effectively to operate in the restricted space in front of the heel breast which is to be covered, the cover laying roll in the illustrated machine is made of small diameter and is moved bodily in a closed path of only slightly greater diameter'than that ofthe roll itself,its carrier being supported upon a rotatable crank pin and being prevented from rotation by a stationary abutment co-operating with an arm extending radlally from the carrier.

These and other featuresand advantages.

of the invention will be better understood and appreciated from reading the following detailed description ofone embodiment thereof in connection with the accompanying drawings, in which Fig. 1 is a view of the machine elevation and longitudinal section;

Fig. 2 is a. perspective view of the essential parts of the machine; and

Fig. 3 is a fragmentary view showing the relation, of the laying rollto the work.

In the machine illustrated in the drawings, 10 indicates any suitable base or support for in front a pair of alined bearings 12 adapted to re PATENT OFFICE r ceive a main driving shaft 14 upon which is a pulley 16, driven by a belt 18.

Upon the end of the shaft 14, which is driven continuously, is a crank pin 20 which is offset only slightly from the axis of the shaft so that it has a very short throw, in the actual machine only about a sixteenth of an inch. The crank pin 20, as well as the shaft 14., of which it is virtually or actually a part, is provided with an axial oil passage 22 and radial holes 24 permit lubricating oil to pass out to the surface of the crank pin.

Supported upon the crank pin 20 is a tool carrier 26 which fits the crank pin snugly but within which the crank pin is freely rotatable. The tool carrier is provided with a rigid extension spindle or pin 28 the axis of which coincides with the axis of the hole in the carrier 26 in which the crank pin has its bearing. Journaled upon the pin 28 is a work engaging sleeve or laying tool 30 which is preferably made of fairly soft material and is herein shown as consisting of a rubber roll secured to a metal sleeve 32 fitting closely upon the pin 28 but freely rotatable thereon.

In order to overcome the tendency of the tool carrier 26 to rotate with the crank pin 20, and positively to prevent rotation of the tool carrier, the carrier is provided with a radial arm 34, the lower end of which is bifurcated and embraces an abutment consisting of a block 36 arranged to rock freely upon a pivot pin 38 which is secured in a stationary housing 40 by a screw 42. The housing 40 is formed, as shown, to provide an oil reservoir in which the bifurcated end of the arm 34: has sliding contact with the block 36.

By virtue of the described construction the roll 30, when the machine is running idle, has no definite tendency to rotate since the spindle or pin 28 does not rotate, although it is moved continuously by the circularly rotating crank pin 20. Inasmuch as the pin 28 is coaxial with the crank pin 20 any point in the axis of the pin 28 moves in a small circle.

All other points in the tool carrier 26 and all points in the surface of the tool 30 move in closed paths which are not circles, being modified by the restraining action of the arm 34, but are sufiiciently convex to provide very smooth, relatively vibrationless. operation as compared with machines embodying reciprocating operating elements. It will be understood that points in the surface of the tool 30 all move continuously in the same direction in closed paths of only slightly greater diameter than that of the tool itself and, inasmuch as the tool is freely movable upon the spindle 28 and is not rotating when it engages the work, there is no substantial tendency for the working surface of the tool to rub or iron the surface of the work which it engages. Furthermore, since the work engaging portion of the tool is made of soft or yielding material there is substantially no tendency to mar delicate materials being operated upon.

In Figs. 2 and 3 of the drawings the machine is shown in the operation of laying a flap 44: upon the breast face of a heel 46 which has previously been secured to a shoe 48. The covering for the heel breast may be a continuation of the sole 50 of the shoe, as illustrated, or may be a separate piece of material, it being understood that a coating of adhesive has previously been applied and that the function of the machine is to lay and beat the covering material into intimate contact with the breast face of the heel so that the cover shall be smooth and shall adhere firmly to the heel breast.

In operation, with the machine running continuously, the work is manipulated in engagement with the cover laying roll 30 until the cover is laid smoothly and securely in position. This may be done very rapidly and perfectly with a minimum of effort by the operator.

Having described the invention, What is claimed as new and desired to be secured by Letters Patent is:

1. In a machine for laying breast covers on heels, a laying tool carrier movable in a closed path, means for preventing rotation of said carrier, and a cover laying tool mounted upon said carrier.

2. A machine for laying breast covers on heels, comprising a non-rotatable pin bodily movable ina closed path, and a freely rotatable work engaging sleeve upon the pin.

3. A machine for laying breast covers on heels, comprising a pin bodily movable in a closed path, and a freely rotatable sleeve of soft material upon the pin.

4:- A machine for laying breast covers on heels, comprising a non-rotatable pin bodily movable in a closed path, and a freely rotatable sleeve of soft material upon the pin.

5. A machine for laying breast covers on heels, comprising a non-rotatable pin bodily movable in a closed path, and a freely rotatable soft rubber laying tool upon the pin.

6. In a machine for laying breast covers on heels, a freely rotatable cover laying roll of small diameter and means for moving said roll bodily in a closed path of only slightly greater diameter than that of the roll.

7 A machine for laying breast covers on heels, comprising a non-rotatable pin the axis of which is movable bodily in acircle about an axis parallel to itself, and a cover laying tool consisting of a sleeve of yielding material loosely mounted upon said pin.

8. A machine for laying breast covers on heels, comprising a rotatable shaft, a crank pin secured to said shaft parallel to the axis thereof, a cover laying tool carrier engaged by said crankpin, and a cover laying tool loosely mounted upon said carrier.

9. A machine for laying breast covers 011 heels, comprising a rotatable crank pin, a cover laying tool carrier supported upon said crank pin, an arm rigid-With the carrier and extending radially therefrom, a stationary abutment cooperating with said arm to prevent rotary movement thereof, a tool receiving pin rigid with the carrier, and a cover laying tool loosely mounted upon said tool receiving pin. 7

In testimony whereof I have signed my name to this specification.

NORWOOD H. KNOWLTON. 

